Error:Function as a parameter for constructor !

[zqiang320]

I have a structure which constructor have a Function pointor as
paramter, But I can't compile it, Could somebody help me check it, I
have post a topic earlier, and Alf P. Steinbach have give me some
advice, I post a simple code here, Could somebody help me check it ?
Thank you very much!

void figauss(const int x, int &a, int &y, int &dyda){

};

struct Fitmrq {

void (*funcs)(const int, int &, int &, int &);

Fitmrq(int &xx, int &yy, int &ssig, int &aa,
void funks(const int,int &, int &, int &), const double
TOL=1.e-3) {

}

};



int main()
{

int xx;
int yy;
int ssigg;
int a;
void fgauss(const int, int , int , int );
Fitmrq mrq(xx,yy,ssigg,a,fgauss,0.000001);

return 1;
}

 

[Alf P. Steinbach]

* zqiang320:

I have a structure which constructor have a Function pointor as
paramter, But I can't compile it, Could somebody help me check it, I
have post a topic earlier, and Alf P. Steinbach have give me some
advice, I post a simple code here, Could somebody help me check it ?
Thank you very much!

void figauss(const int x, int &a, int &y, int &dyda){

};

struct Fitmrq {

void (*funcs)(const int, int &, int &, int &);

Fitmrq(int &xx, int &yy, int &ssig, int &aa,
void funks(const int,int &, int &, int &), const double
TOL=1.e-3) {

}

};



int main()
{

int xx;
int yy;
int ssigg;
int a;
void fgauss(const int, int , int , int );
Fitmrq mrq(xx,yy,ssigg,a,fgauss,0.000001);

return 1;
}

Try removing the declaration of 'fgauss' in 'main', and change 'fgauss' to
'figauss' in the declaration of 'mrq'.

Cheers & hth.,

- Alf

PS: By the way, it's a good idea to also post the exact error message plus info
about which compiler and version. The FAQ has some info about how to post
questions about Code That Does Not Work.

 

[Tonni Tielens]

        Fitmrq(int &xx, int &yy, int &ssig, int &aa,
        void funks(const int,int &, int &, int &), const double
        TOL=1.e-3) {

void fgauss(const int, int , int , int );

fgauss is of type
void (const int, int, int, int)

while your constructor expects a function pointer of type:
void (const int, int&, int&, int&);

 

[Qiang Zhong]

* zqiang320:











Try removing the declaration of 'fgauss' in 'main', and change 'fgauss' to
'figauss' in the declaration of 'mrq'.

Cheers & hth.,

- Alf

PS: By the way, it's a good idea to also post the exact error message plus info
about which compiler and version. The FAQ has some info about how to post
questions about Code That Does Not Work.

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Thank you very much!
I have change the line:
void fgauss(const Doub x, VecDoub_I &a, Doub &y, VecDoub_O &dyda);
Fitmrq mrq(xx,yy,ssigg,a,fgauss,0.000001);

//Then I got correct result!